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<h1 class="title">mousearea.qml 示例文件</h1>
<span class="subtitle">mousearea/mousearea.qml</span>
<!-- $$$mousearea/mousearea.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
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  **     from this software without specific prior written permission.
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  **
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  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  import QtQuick 2.4

  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
      <span class="name">id</span>: <span class="name">box</span>
      <span class="name">width</span>: <span class="number">320</span>; <span class="name">height</span>: <span class="number">480</span>

      <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
          <span class="name">id</span>: <span class="name">redSquare</span>
          <span class="name">width</span>: <span class="number">120</span>; <span class="name">height</span>: <span class="number">120</span>
          <span class="name">anchors</span>.top: <span class="name">parent</span>.<span class="name">top</span>; <span class="name">anchors</span>.left: <span class="name">parent</span>.<span class="name">left</span>; <span class="name">anchors</span>.margins: <span class="number">10</span>
          <span class="name">color</span>: <span class="string">&quot;red&quot;</span>
          <span class="name">opacity</span>: <span class="name">redSquareMouseArea</span>.<span class="name">containsPress</span> ? <span class="number">0.6</span> : <span class="number">1.0</span>

          <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">text</span>: <span class="string">&quot;Click&quot;</span>; <span class="name">font</span>.pixelSize: <span class="number">16</span>; <span class="name">anchors</span>.centerIn: <span class="name">parent</span> }

          <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
              <span class="name">id</span>: <span class="name">redSquareMouseArea</span>
              <span class="name">anchors</span>.fill: <span class="name">parent</span>
              <span class="name">hoverEnabled</span>: <span class="number">true</span>
              property <span class="type"><a href="../qtqml/qml-string.html">string</a></span> <span class="name">buttonID</span>

              <span class="name">acceptedButtons</span>: <span class="name">Qt</span>.<span class="name">AllButtons</span>
              <span class="comment">// Value 'All.Buttons' is eqivalent to:</span>
              <span class="comment">// 'Qt::LeftButton | Qt::RightButton | Qt::MiddleButton  .... | Qt::ExtraButton24'</span>

              <span class="name">onEntered</span>: <span class="name">info</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Entered'</span>
              <span class="name">onExited</span>: <span class="name">info</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Exited (pressed='</span> <span class="operator">+</span> <span class="name">pressed</span> <span class="operator">+</span> <span class="string">')'</span>

              <span class="name">onPressed</span>: {
                  <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">LeftButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'LeftButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">RightButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'RightButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">MidButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'MiddleButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">BackButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'BackButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ForwardButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ForwardButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">TaskButton</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'TaskButton'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton4</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton4'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton5</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton5'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton6</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton6'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton7</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton7'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton8</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton8'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton9</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton9'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton10</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton10'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton11</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton11'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton12</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton12'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton13</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton13'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton14</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton14'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton15</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton15'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton16</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton16'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton17</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton17'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton18</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton18'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton19</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton19'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton20</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton20'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton21</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton21'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton22</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton22'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton23</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton23'</span>
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">mouse</span>.<span class="name">button</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">ExtraButton24</span>)
                      <span class="name">buttonID</span> <span class="operator">=</span> <span class="string">'ExtraButton24'</span>

                  <span class="name">info</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Pressed ('</span> <span class="operator">+</span> <span class="name">buttonID</span> <span class="operator">+</span> <span class="string">' shift='</span>
                      <span class="operator">+</span> (<span class="name">mouse</span>.<span class="name">modifiers</span> <span class="operator">&amp;</span> <span class="name">Qt</span>.<span class="name">ShiftModifier</span> ? <span class="string">'true'</span> : <span class="string">'false'</span>) <span class="operator">+</span> <span class="string">')'</span>
                  var <span class="name">posInBox</span> = <span class="name">redSquare</span>.<span class="name">mapToItem</span>(<span class="name">box</span>, <span class="name">mouse</span>.<span class="name">x</span>, <span class="name">mouse</span>.<span class="name">y</span>)
                  <span class="name">posInfo</span>.<span class="name">text</span> <span class="operator">=</span> + <span class="name">mouse</span>.<span class="name">x</span> <span class="operator">+</span> <span class="string">','</span> <span class="operator">+</span> <span class="name">mouse</span>.<span class="name">y</span> <span class="operator">+</span> <span class="string">' in square'</span>
                          <span class="operator">+</span> <span class="string">' ('</span> <span class="operator">+</span> <span class="name">posInBox</span>.<span class="name">x</span> <span class="operator">+</span> <span class="string">','</span> <span class="operator">+</span> <span class="name">posInBox</span>.<span class="name">y</span> <span class="operator">+</span> <span class="string">' in window)'</span>
              }

              <span class="name">onReleased</span>: {
                  <span class="name">btn</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Released (isClick='</span> <span class="operator">+</span> <span class="name">mouse</span>.<span class="name">isClick</span> <span class="operator">+</span> <span class="string">' wasHeld='</span> <span class="operator">+</span> <span class="name">mouse</span>.<span class="name">wasHeld</span> <span class="operator">+</span> <span class="string">')'</span>
                  <span class="name">posInfo</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">''</span>
              }

              <span class="name">onPressAndHold</span>: <span class="name">btn</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Press and hold'</span>
              <span class="name">onClicked</span>: <span class="name">btn</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Clicked (wasHeld='</span> <span class="operator">+</span> <span class="name">mouse</span>.<span class="name">wasHeld</span> <span class="operator">+</span> <span class="string">')'</span>
              <span class="name">onDoubleClicked</span>: <span class="name">btn</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">'Double clicked'</span>
          }
      }

      <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
          <span class="name">id</span>: <span class="name">blueSquare</span>
          <span class="name">width</span>: <span class="number">120</span>; <span class="name">height</span>: <span class="number">120</span>
          <span class="name">x</span>: <span class="name">box</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">width</span> <span class="operator">-</span> <span class="number">10</span>; <span class="name">y</span>: <span class="number">10</span>    <span class="comment">// making this item draggable, so don't use anchors</span>
          <span class="name">color</span>: <span class="string">&quot;blue&quot;</span>

          <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">text</span>: <span class="string">&quot;Drag&quot;</span>; <span class="name">font</span>.pixelSize: <span class="number">16</span>; <span class="name">color</span>: <span class="string">&quot;white&quot;</span>; <span class="name">anchors</span>.centerIn: <span class="name">parent</span> }

          <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
              <span class="name">anchors</span>.fill: <span class="name">parent</span>
              <span class="name">drag</span>.target: <span class="name">blueSquare</span>
              <span class="name">drag</span>.axis: <span class="name">Drag</span>.<span class="name">XAndYAxis</span>
              <span class="name">drag</span>.minimumX: <span class="number">0</span>
              <span class="name">drag</span>.maximumX: <span class="name">box</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">parent</span>.<span class="name">width</span>
              <span class="name">drag</span>.minimumY: <span class="number">0</span>
              <span class="name">drag</span>.maximumY: <span class="name">box</span>.<span class="name">height</span> <span class="operator">-</span> <span class="name">parent</span>.<span class="name">width</span>
          }
      }

      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> {
          <span class="name">id</span>: <span class="name">info</span>
          <span class="name">anchors</span>.bottom: <span class="name">btn</span>.<span class="name">top</span>; <span class="name">anchors</span>.horizontalCenter: <span class="name">parent</span>.<span class="name">horizontalCenter</span>; <span class="name">anchors</span>.margins: <span class="number">20</span>

          <span class="name">onTextChanged</span>: <span class="name">console</span>.<span class="name">log</span>(<span class="name">text</span>)
      }

      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> {
          <span class="name">id</span>: <span class="name">btn</span>
          <span class="name">anchors</span>.bottom: <span class="name">posInfo</span>.<span class="name">top</span>; <span class="name">anchors</span>.horizontalCenter: <span class="name">parent</span>.<span class="name">horizontalCenter</span>; <span class="name">anchors</span>.margins: <span class="number">20</span>
      }

      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> {
          <span class="name">id</span>: <span class="name">posInfo</span>
          <span class="name">anchors</span>.bottom: <span class="name">parent</span>.<span class="name">bottom</span>; <span class="name">anchors</span>.horizontalCenter: <span class="name">parent</span>.<span class="name">horizontalCenter</span>; <span class="name">anchors</span>.margins: <span class="number">20</span>
      }
  }

</pre>
</div>
<!-- @@@mousearea/mousearea.qml -->
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